High
Er 14 on Biasi Advance 25C

Your boiler has detected that water isn't moving through the system properly or there is a lack of water, causing it to overheat and lock itself for protection.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Faulty primary circuit (no water or absence of flow) (temperature in-crease > 2K/s) (the boiler can’t restart for 10 minutes)

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

Er 01View →Er 02View →Er 03View →

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